As part of our image quality testing for the Pentax Optio VS20, we've shot our resolution chart.

If you view our crops of the resolution chart's central section at 100% (or Actual Pixels) you will see that, for example, at ISO 100, the Pentax VS20 is capable of resolving up to around 24 (line widths per picture height x100) in its highest quality JPEG files.

See here for a full explanation of what our resolution charts mean.

Examining images of the chart taken at each sensitivity setting reveals the following resolution scores in line widths per picture height x100:

JPEG images

ISO 100, score: 24 (see full image)

ISO 200, score: 18 (see full image)

ISO 400, score: 22 (see full image)

ISO 800, score: 14 (see full image)

ISO 1600, score: 16 (see full image)

ISO 3200, score: n/a (see full image)

ISO 6400, score: n/a (see full image)